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Black ATX motherboard with grey heatsinks and four DDR4 memory slots

MSI

MSI B450 TOMAHAWK AMD motherboard

SKU CH-8780-SVYV6

ATX board with AM4 socket for RYZEN CPUs, four DDR4 slots up to 64 GB, Steel Armor PCIe 3.0 x16, Turbo M.2, Realtek 8111H Gigabit LAN and RGB Mystic Light

  • CPU socketAM4
  • Form factorATX
  • Memory slot count4 x DDR4 Boost DIMM slots (Dual Channel, up to 64 GB)
  • Supported memoryDDR4 SDRAM
  • Max supported RAMSupports DDR4 2133 up to 3466+(OC) MHz as MSI Compatibility
  • PCI slots1 PCIe 3.0 × 16 Steel Armor, 1 PCIe 2.0 × 16 (x4 mode), 3 PC
  • AM4 socket fits RYZEN 1st and 2nd Gen CPUs
  • Four DDR4 Boost slots support up to 64 GB
  • Turbo M.2 slot runs PCIe 3.0x4 or SATA SSDs
  • Realtek 8111H Gigabit LAN delivers 10/100/1000 speeds
  • Mystic Light RGB sync offers 16.8 million colours

Socket AM4 ATX board

The MSI B450 TOMAHAWK is an ATX motherboard built around the AMD B450 chipset and a Socket AM4 CPU interface. It accepts AMD RYZEN 1st and 2nd Generation processors as well as RYZEN models with Radeon Vega Graphics. Four DDR4 Boost DIMM slots support dual-channel memory up to 64 GB.

Builders needing CrossFire and M.2

This board suits DIY builders who want 2-way AMD CrossFire support and a single Turbo M.2 slot for PCIe 3.0x4 or SATA SSDs. It also provides Realtek 8111H Gigabit LAN, 7.1-channel audio, rear USB 3.1 Type-C, and Mystic Light RGB headers. Systems requiring integrated Wi-Fi, additional M.2 sockets or newer CPU generations should look elsewhere.

Turbo M.2 slot decides fit

The single Turbo M.2 slot (Key M) is the specification that determines whether this board matches your storage plan. It handles one PCIe 3.0x4 or SATAIII SSD and shares bandwidth with the second PCIe 2.0x16 slot running in x4 mode.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $86.99
Cheaper than about 80% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Model nameMSI B450 TOMAHAWK
Processor
CPU socketAM4
Memory
Memory slot count4 x DDR4 Boost DIMM slots (Dual Channel, up to 64 GB)
Supported memoryDDR4 SDRAM
Max supported RAMSupports DDR4 2133 up to 3466+(OC) MHz as MSI Compatibility List
Audio & video
Sound channels7.1 Channels
Connectivity
Wi-Fi standardVia PCIe or USB (add-on WLAN card or dongle required)
Ports & slots
PCI slots1 PCIe 3.0 × 16 Steel Armor, 1 PCIe 2.0 × 16 (x4 mode), 3 PCIe 2.0 × 1
Size & build
Form factorATX

Questions about this item

How do I confirm the DDR4 Boost DIMM slots are running at the 3466 MHz OC speed after setup?

Enter the BIOS, enable the XMP profile that matches your memory kit, save and reboot, then verify the reported DRAM frequency reads 3466 MHz in the BIOS hardware monitor or a Windows utility such as CPU-Z.

What cables or add-ons are not included and must be purchased separately for a first build?

The board ships with SATA cables, an I/O shield and driver media; you must buy a CPU cooler, DDR4 modules, a graphics card if your processor lacks Radeon Vega graphics, and a PCIe or USB Wi-Fi adapter for wireless LAN.

Which M.2 SSD type fits the single Turbo M.2 Key M slot — PCIe 3.0 x4 or SATA?

The Key M slot accepts both PCIe 3.0 x4 and SATA III M.2 drives; choose a PCIe 3.0 x4 model for the highest throughput or a SATA model if you prefer lower cost and the slot will run at SATA speeds.

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